Car Body Size Control And Process Design Of Fixture

The automotive industry have become an important pillar of the global industry, automotive body manufacturers in the automotive industry is one of the most critical projects, with the increasingly competitive domestic and foreign markets, consumer automotive quality requirements have become more sophisticated, cars BIW vehicle directly affects the quality of the appearance, performance and security. Welding production process as a vehicle one of the four processes, the level of welding quality on body size of car is essential, can be said that the manufacturing process in the body, welding is the key process is the core of the whole body manufacturing, white body determines the merits of quality welding vehicle manufacturing quality. Body welding welding fixture to ensure the quality of the most important factor, the main role of welding fixture to ensure that all welding is the relative position between the stamping and welding parts for dimensional accuracy, and reasonable fixture design, solder joint planning, welding clamp selection, to ensure weld quality, reduce production costs and increase productivity.This article describes the size of the deviation, especially in the process, introduced the quality evaluation methods and the size of the control method to control the size of the body in the design of the means, and analyze the structure of the means of welding, location, design principle steps and positioning of reliability design methods. combine domestic a miniature, the use of fixture design effectiveness to control the size, to begin with a fixture design and craft. Production programme to identify production and welds planning, the bodywork is divided into seven points assemblies and soldering process design and finished the fig tree shapes, according to the soldering process analysis of the product, the whole assembly of a balanced design, while ensuring people, logistics planning was clear that welding line, according to the point of features analysis of the anchor up and up the number and position to determine the welds distribution and niche between the way. Catia jig of the software used in computer-aided designing, one seat for, locating and pressing of waiting, raised design, precision and shorten the period, and software in the assembly will catia data and fixture in the assembly process with the scheme, the jigs the feasibility of operating convenience. a simple introduction to design principles, if the improved means of a soldering on the assembly on the testing if available, And the data be verified by the improved means to control the size of effectiveness.